training equipment. The Type 91 weights at 11.5 kilograms, which is lighter than the Stinger as it has a weight of 15.2 kilograms. Improvements of the Type 91 Kai included missile with image-infra-red seeker, smokeless motor and the capability to have faster shooting and target acquisition and was also improved for the ability to be used at night. Variants An improved version of the Type 91, called the Type 91 Kai, was delivered to replace the original. A vehicle based variant, the Type 93 Surface-to-air missile launcher, has also been developed. This is also made by Toshiba Heavy Industries. The system is mounted on Toyota-made Kōkidōshas. Operators Japan Ground Self-Defense Force: The Type 91 is used by the Kawasaki OH-1 as its primary anti-aircraft weapon system aside from being used as a MANPAD. Japan Air Self-Defense Force: Being used as an anti-aircraft MANPAD by the 101st Base Protection Team. References External links Official JGSDF Page Surface-to-air missiles of Japan Weapons and ammunition introduced in 1994 Air-to-air missiles of Japan Cold War weapons of Japan Post–Cold War weapons of Japan